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<p class="subTitle">org.apache.poi.poifs.common</p>
<h2 title="Interface POIFSConstants" class="title">Interface POIFSConstants</h2>
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<pre>public interface <strong>POIFSConstants</strong></pre>
<div class="block"><p>A repository for constants shared by POI classes.</p></div>
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<h3>Field Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation">
<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#BIG_BLOCK_MINIMUM_DOCUMENT_SIZE">BIG_BLOCK_MINIMUM_DOCUMENT_SIZE</a></strong></code>
<div class="block">The minimum size of a document before it's stored using 
  Big Blocks (normal streams).</div>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#DIFAT_SECTOR_BLOCK">DIFAT_SECTOR_BLOCK</a></strong></code>
<div class="block">Indicates the sector holds a DIFAT block (0xFFFFFFFC)</div>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#END_OF_CHAIN">END_OF_CHAIN</a></strong></code>
<div class="block">Indicates the sector is the end of a chain (0xFFFFFFFE)</div>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#FAT_SECTOR_BLOCK">FAT_SECTOR_BLOCK</a></strong></code>
<div class="block">Indicates the sector holds a FAT block (0xFFFFFFFD)</div>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#LARGER_BIG_BLOCK_SIZE">LARGER_BIG_BLOCK_SIZE</a></strong></code>
<div class="block">Some use 4096 bytes</div>
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<td class="colFirst"><code>static <a href="../../../../../org/apache/poi/poifs/common/POIFSBigBlockSize.html" title="class in org.apache.poi.poifs.common">POIFSBigBlockSize</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#LARGER_BIG_BLOCK_SIZE_DETAILS">LARGER_BIG_BLOCK_SIZE_DETAILS</a></strong></code>&nbsp;</td>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#LARGEST_REGULAR_SECTOR_NUMBER">LARGEST_REGULAR_SECTOR_NUMBER</a></strong></code>
<div class="block">The highest sector number you're allowed, 0xFFFFFFFA</div>
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<td class="colFirst"><code>static byte[]</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#OOXML_FILE_HEADER">OOXML_FILE_HEADER</a></strong></code>
<div class="block">The first 4 bytes of an OOXML file, used in detection</div>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#PROPERTY_SIZE">PROPERTY_SIZE</a></strong></code>
<div class="block">How big a single property is</div>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#SMALL_BLOCK_SIZE">SMALL_BLOCK_SIZE</a></strong></code>
<div class="block">How big a block in the small block stream is.</div>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#SMALLER_BIG_BLOCK_SIZE">SMALLER_BIG_BLOCK_SIZE</a></strong></code>
<div class="block">Most files use 512 bytes as their big block size</div>
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<td class="colFirst"><code>static <a href="../../../../../org/apache/poi/poifs/common/POIFSBigBlockSize.html" title="class in org.apache.poi.poifs.common">POIFSBigBlockSize</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#SMALLER_BIG_BLOCK_SIZE_DETAILS">SMALLER_BIG_BLOCK_SIZE_DETAILS</a></strong></code>&nbsp;</td>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><strong><a href="../../../../../org/apache/poi/poifs/common/POIFSConstants.html#UNUSED_BLOCK">UNUSED_BLOCK</a></strong></code>
<div class="block">Indicates the sector is not used (0xFFFFFFFF)</div>
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<pre>static final&nbsp;int SMALLER_BIG_BLOCK_SIZE</pre>
<div class="block">Most files use 512 bytes as their big block size</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.poi.poifs.common.POIFSConstants.SMALLER_BIG_BLOCK_SIZE">Constant Field Values</a></dd></dl>
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<pre>static final&nbsp;<a href="../../../../../org/apache/poi/poifs/common/POIFSBigBlockSize.html" title="class in org.apache.poi.poifs.common">POIFSBigBlockSize</a> SMALLER_BIG_BLOCK_SIZE_DETAILS</pre>
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<pre>static final&nbsp;int LARGER_BIG_BLOCK_SIZE</pre>
<div class="block">Some use 4096 bytes</div>
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<pre>static final&nbsp;<a href="../../../../../org/apache/poi/poifs/common/POIFSBigBlockSize.html" title="class in org.apache.poi.poifs.common">POIFSBigBlockSize</a> LARGER_BIG_BLOCK_SIZE_DETAILS</pre>
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<pre>static final&nbsp;int SMALL_BLOCK_SIZE</pre>
<div class="block">How big a block in the small block stream is. Fixed size</div>
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<pre>static final&nbsp;int PROPERTY_SIZE</pre>
<div class="block">How big a single property is</div>
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<pre>static final&nbsp;int BIG_BLOCK_MINIMUM_DOCUMENT_SIZE</pre>
<div class="block">The minimum size of a document before it's stored using 
  Big Blocks (normal streams). Smaller documents go in the 
  Mini Stream (SBAT / Small Blocks)</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.poi.poifs.common.POIFSConstants.BIG_BLOCK_MINIMUM_DOCUMENT_SIZE">Constant Field Values</a></dd></dl>
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<pre>static final&nbsp;int LARGEST_REGULAR_SECTOR_NUMBER</pre>
<div class="block">The highest sector number you're allowed, 0xFFFFFFFA</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.poi.poifs.common.POIFSConstants.LARGEST_REGULAR_SECTOR_NUMBER">Constant Field Values</a></dd></dl>
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<pre>static final&nbsp;int DIFAT_SECTOR_BLOCK</pre>
<div class="block">Indicates the sector holds a DIFAT block (0xFFFFFFFC)</div>
<dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../../constant-values.html#org.apache.poi.poifs.common.POIFSConstants.DIFAT_SECTOR_BLOCK">Constant Field Values</a></dd></dl>
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<pre>static final&nbsp;int FAT_SECTOR_BLOCK</pre>
<div class="block">Indicates the sector holds a FAT block (0xFFFFFFFD)</div>
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<pre>static final&nbsp;int END_OF_CHAIN</pre>
<div class="block">Indicates the sector is the end of a chain (0xFFFFFFFE)</div>
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<pre>static final&nbsp;int UNUSED_BLOCK</pre>
<div class="block">Indicates the sector is not used (0xFFFFFFFF)</div>
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<pre>static final&nbsp;byte[] OOXML_FILE_HEADER</pre>
<div class="block">The first 4 bytes of an OOXML file, used in detection</div>
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